GC/FTIR-FID测定石化废水中挥发性有机物

所述石化废水中挥发性有机物分析方法 ,以 GC分离 ,FTIR定性 ,FID定量。水样前处理采用大吹脱体积 ,两级捕集的吹脱捕集技术。为解决剖析分析无标样定量问题 ,成功地实现了 GC/FTIR-FID匹配联机 ,使得未知组分定性定量一次完成。方法变异系数低于 5% ,回收率高于 90 % ,最低检出浓度可达 0 .0 0 5mg/L

Volatile organic compounds in wastewater of petrochemicalworks by purge and trap GC/FTIR FID

In this paper, GC/FTIR FID is used for the analysis of wastewater samples of petrochemical works. The volatile organic compounds is concentrated by the bigger volume of sample purged and two levels trapped. In order to solving the problem of no standard substences for some components be quantified, GC/FTIR FID matching is applied, so by one analysis, qualitative and quantitative are compeleted for unknomn components. The coefficient of variation of this method is below 5%, recovery exceeds 90%, the mininum concentration retrieved is 0.005 mg/L.